什麽原因導致我的VS2010在運行中經常出現未響應？哪個大俠能解釋下！電腦的配置覺得沒問題！

[08/12/11,19:14:16] Microsoft .NET Framework 3.0 SP2 x86: [2] Error: Installation failed for component Microsoft .NET Framework 3.0 SP2 x86. MSI returned error code 1603

[08/12/11,19:15:00] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.0 SP2 x86 is not installed.

[08/12/11,19:29:28] Microsoft .NET Framework 2.0a: [2] Error: Installation failed for component Microsoft .NET Framework 2.0ft .NET Framework 2.0a is not installed.

[08/12/11,19:43:12] Microsoft .NET Framework 2.0a: [2] Error: Installation failed